Struct rquickjs_core::Promise[−][src]

pub struct Promise<T> { /* fields omitted */ }

This is supported on crate feature futures only.

Expand description

Future-aware promise

Trait Implementations

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impl<'js, T> FromJs<'js> for Promise<T> where
T: FromJs<'js> + ParallelSend + 'static,

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fn from_js(_ctx: Ctx<'js>, value: Value<'js>) -> Result<Self>

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impl<T> Future for Promise<T>

type Output = Result<T>

The type of value produced on completion.

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fn poll(self: Pin<&mut Self>, cx: &mut TaskContext<'_>) -> Poll<Self::Output>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

Auto Trait Implementations

impl<T> !RefUnwindSafe for Promise<T>

impl<T> !Send for Promise<T>

impl<T> !Sync for Promise<T>

impl<T> Unpin for Promise<T>

impl<T> !UnwindSafe for Promise<T>

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

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pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

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pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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pub fn from(t: T) -> T

Performs the conversion.

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impl<T> FutureExt for T where
T: Future + ?Sized,

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fn delay(self, dur: Duration) -> DelayFuture<Self>

This is supported on crate feature unstable only.

Returns a Future that delays execution for a specified time. Read more

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fn flatten(self) -> FlattenFuture<Self, <Self::Output as IntoFuture>::Future> where
Self::Output: IntoFuture,

This is supported on crate feature unstable only.

Flatten out the execution of this future when the result itself can be converted into another future. Read more

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fn race<F>(self, other: F) -> Race<Self, F> where
Self: Future,
F: Future<Output = Self::Output>,

This is supported on crate feature unstable only.

Waits for one of two similarly-typed futures to complete. Read more

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fn try_race<F, T, E>(self, other: F) -> TryRace<Self, F> where
Self: Future<Output = Result<T, E>>,
F: Future<Output = Self::Output>,

This is supported on crate feature unstable only.

Waits for one of two similarly-typed fallible futures to complete. Read more

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fn join<F>(self, other: F) -> Join<Self, F> where
Self: Future,
F: Future,

This is supported on crate features unstable or docs only.

Waits for two similarly-typed futures to complete. Read more

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fn try_join<F, A, B, E>(self, other: F) -> TryJoin<Self, F> where
Self: Future<Output = Result<A, E>>,
F: Future<Output = Result<B, E>>,

This is supported on crate features unstable or docs only.

Waits for two similarly-typed fallible futures to complete. Read more

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fn timeout(self, dur: Duration) -> TimeoutFuture<Self>

This is supported on crate features default and unstable, or crate feature docs only.

Waits for both the future and a timeout, if the timeout completes before the future, it returns an TimeoutError. Read more

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impl<F> FutureExt for F where
F: Future + ?Sized,

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fn poll(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,

A convenience for calling Future::poll() on !Unpin types.

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fn or<F>(self, other: F) -> Or<Self, F> where
F: Future<Output = Self::Output>,

Returns the result of self or other future, preferring self if both are ready. Read more

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fn race<F>(self, other: F) -> Race<Self, F> where
F: Future<Output = Self::Output>,

This is supported on crate feature std only.

Returns the result of self or other future, with no preference if both are ready. Read more

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fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,

This is supported on crate feature std only.

Catches panics while polling the future. Read more

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fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>> where
Self: 'a + Send,

This is supported on crate feature alloc only.

Boxes the future and changes its type to dyn Future + Send + 'a. Read more

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fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where
Self: 'a,

This is supported on crate feature alloc only.

Boxes the future and changes its type to dyn Future + 'a. Read more

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impl<T, U> Into for T where
U: From<T>,

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pub fn into(self) -> U

Performs the conversion.

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impl<F> IntoFuture for F where
F: Future,

type Output = <F as Future>::Output

🔬 This is a nightly-only experimental API. (into_future)

The output that the future will produce on completion.

type Future = F

🔬 This is a nightly-only experimental API. (into_future)

Which kind of future are we turning this into?

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pub fn into_future(self) -> <F as IntoFuture>::Future

🔬 This is a nightly-only experimental API. (into_future)

Creates a future from a value.

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impl<T> IntoFuture for T where
T: Future,

type Output = <T as Future>::Output

The type of value produced on completion.

type Future = T

Which kind of future are we turning this into?

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pub fn into_future(self) -> <T as IntoFuture>::Future

Create a future from a value

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

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pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,

type Ok = T

The type of successful values yielded by this future

type Error = E

The type of failures yielded by this future

pub fn try_poll(
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>

Poll this TryFuture as if it were a Future. Read more

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

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pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct rquickjs_core::Promise[−][src]

Trait Implementations

impl<'js, T> FromJs<'js> for Promise<T> where T: FromJs<'js> + ParallelSend + 'static,

fn from_js(_ctx: Ctx<'js>, value: Value<'js>) -> Result<Self>

impl<T> Future for Promise<T>

type Output = Result<T>

fn poll(self: Pin<&mut Self>, cx: &mut TaskContext<'_>) -> Poll<Self::Output>

Auto Trait Implementations

impl<T> !RefUnwindSafe for Promise<T>

impl<T> !Send for Promise<T>

impl<T> !Sync for Promise<T>

impl<T> Unpin for Promise<T>

impl<T> !UnwindSafe for Promise<T>

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T> FutureExt for T where T: Future + ?Sized,

fn delay(self, dur: Duration) -> DelayFuture<Self>

fn flatten(self) -> FlattenFuture<Self, <Self::Output as IntoFuture>::Future> where Self::Output: IntoFuture,

fn race<F>(self, other: F) -> Race<Self, F> where Self: Future, F: Future<Output = Self::Output>,

fn try_race<F, T, E>(self, other: F) -> TryRace<Self, F> where Self: Future<Output = Result<T, E>>, F: Future<Output = Self::Output>,

fn join<F>(self, other: F) -> Join<Self, F> where Self: Future, F: Future,

fn try_join<F, A, B, E>(self, other: F) -> TryJoin<Self, F> where Self: Future<Output = Result<A, E>>, F: Future<Output = Result<B, E>>,

fn timeout(self, dur: Duration) -> TimeoutFuture<Self>

impl<F> FutureExt for F where F: Future + ?Sized,

fn poll(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where Self: Unpin,

fn or<F>(self, other: F) -> Or<Self, F> where F: Future<Output = Self::Output>,

fn race<F>(self, other: F) -> Race<Self, F> where F: Future<Output = Self::Output>,

fn catch_unwind(self) -> CatchUnwind<Self> where Self: UnwindSafe,

fn boxed<'a>( self) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>> where Self: 'a + Send,

fn boxed_local<'a>( self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where Self: 'a,

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<F> IntoFuture for F where F: Future,

type Output = <F as Future>::Output

type Future = F

pub fn into_future(self) -> <F as IntoFuture>::Future

impl<T> IntoFuture for T where T: Future,

type Output = <T as Future>::Output

type Future = T

pub fn into_future(self) -> <T as IntoFuture>::Future

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized,

type Ok = T

type Error = E

pub fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_>) -> Poll<<F as Future>::Output>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<'js, T> FromJs<'js> for Promise<T> where
T: FromJs<'js> + ParallelSend + 'static,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T> FutureExt for T where
T: Future + ?Sized,

fn flatten(self) -> FlattenFuture<Self, <Self::Output as IntoFuture>::Future> where
Self::Output: IntoFuture,

fn race<F>(self, other: F) -> Race<Self, F> where
Self: Future,
F: Future<Output = Self::Output>,

fn try_race<F, T, E>(self, other: F) -> TryRace<Self, F> where
Self: Future<Output = Result<T, E>>,
F: Future<Output = Self::Output>,

fn join<F>(self, other: F) -> Join<Self, F> where
Self: Future,
F: Future,

fn try_join<F, A, B, E>(self, other: F) -> TryJoin<Self, F> where
Self: Future<Output = Result<A, E>>,
F: Future<Output = Result<B, E>>,

impl<F> FutureExt for F where
F: Future + ?Sized,

fn poll(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,

fn or<F>(self, other: F) -> Or<Self, F> where
F: Future<Output = Self::Output>,

fn race<F>(self, other: F) -> Race<Self, F> where
F: Future<Output = Self::Output>,

fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,

fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>> where
Self: 'a + Send,

fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where
Self: 'a,

impl<T, U> Into<U> for T where
U: From<T>,

impl<F> IntoFuture for F where
F: Future,

impl<T> IntoFuture for T where
T: Future,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,

pub fn try_poll(
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,